盐酸氨溴索不同持续使用时间对慢性阻塞性肺疾病急性加重期的治疗效果
염산안추색불동지속사용시간대만성조새성폐질병급성가중기적치료효과
The curative effect of sustaining treatment by ambroxol in different hours for patients with acute exacerbation of chronic obstructive pulmonary disease
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